TASK DEFINITION: You are given a sentence and your task is to generate another sentence that supports the given input.
PROBLEM: Exposure to radiation or cancer-causing chemicals may cause DNA  mutations in many organs, but these factors have not been proven to be important causes of mutations in prostate cells.

SOLUTION: Cancer is caused by mutations, which can be caused by pathogens, chemicals, or radiation.

PROBLEM: Species interactions in communities are important factors in  natural selection.

SOLUTION: Community interactions are important factors in natural selection.

PROBLEM: Pluto has at least three moons, including one fully half the size of Pluto itself.

SOLUTION:
Pluto has three moons.

